2 votes 2 votes How to find no of Equivalence relation?? e,g A={1,2,3,4,5,6,7} R : A->A Abhisek Tiwari 4 asked Nov 14, 2017 Abhisek Tiwari 4 215 views answer comment Share Follow See 1 comment See all 1 1 comment reply Anjan commented Nov 14, 2017 reply Follow Share 877 ? 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes 127 should be the answer 7C1 +7C2+........7C7=127 abhishek tiwary answered Nov 14, 2017 abhishek tiwary comment Share Follow See 1 comment See all 1 1 comment reply Abhisek Tiwari 4 commented Nov 16, 2017 reply Follow Share Why not true in case n=3 i.e A={1,2,3} Acc to your Formula 2C1+2C2=23-1=7 but it is not true.Correct ans will be 5 0 votes 0 votes Please log in or register to add a comment.
